209320900

素因数分解:

$2^2\times 5^2\times {\mathrm{389}}^1\times {\mathrm{5381}}^1$

素因数の和:5784

約数の個数: 36

約数和(自身を含む): 455478660

約数和(自身を除く): 246157760

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 389, 778, 1556, 1945, 3890, 5381, 7780, 9725, 10762, 19450, 21524, 26905, 38900, 53810, 107620, 134525, 269050, 538100, 2093209, 4186418, 8372836, 10466045, 20932090, 41864180, 52330225, 104660450, 209320900]

約数ペア:

[(1, 209320900), (2, 104660450), (4, 52330225), (5, 41864180), (10, 20932090), (20, 10466045), (25, 8372836), (50, 4186418), (100, 2093209), (389, 538100), (778, 269050), (1556, 134525), (1945, 107620), (3890, 53810), (5381, 38900), (7780, 26905), (9725, 21524), (10762, 19450)]